<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>盒子模型</title>
	<style type="text/css">
		body
		{
				margin: 0;
			padding: 0;
		}
		div{
			width:400px;
			height:400px;
			background-color: yellow;
			border: 10px solid green;
			padding: 10px;
			margin: 10px;
		}
		table { 
			border: 1px solid green;
			border-collapse:collapse;
			 }

	</style>
</head>

<body>
	<div>dfgsegsertwetrwertwert</div>
	<div>dfgsegsertwetrwertwert</div>
	<table>
		<tbody>
			<tr>
				<td>1</td>
				<td>2</td>
				<td>3</td>
				<td>4</td>
			</tr>
<tr>
				<td>1</td>
				<td>2</td>
				<td>3</td>
				<td>4</td>
			</tr>
			<tr>
				<td>1</td>
				<td>2</td>
				<td>3</td>
				<td>4</td>
			</tr>
		</tbody>

	</table>
</body>
</html>